Where is this "half burned note" I was supposed to find a few updates ago. I have looked evetwhere I can thnik of. Does it appear in the "key items"? I assume it is critical to the rebel option.
Once you have all requirements, you can find the burned note here:
You don't get an item from it, but you get the quest "Dorgania Slaves" when you interact with it.
You need Brad and Sandra in your group, open borders with Dorgania, the events with Mike and the release of a vampire in Kagabangui done, and the dialog with King Lancafew about his opinion on slavery. After you have all of these things, the note will appear when you enter Kagabangui via the world map again.